语法与词汇The town is (famous) for its magnificent church towers.

语法与词汇{{U}}Practically{{/U}} all animals communicate through sounds

语法与词汇Navajo Indians create sand paintings by arranging grains of sand, ground-up minerals, and seeds of various colors into (designs).

语法与词汇The New Year is coming. We decided to give our room a (thorough) clean.

语法与词汇Her voice is distinct and (unique). You can tell her voice immediately.

语法与词汇A careless person is apt to make mistakes

语法与词汇We were so greatly (attracted) by the beauty of the West Lake that we decided to visit Hangzhou again the next year.

语法与词汇It is (great) decision for the young boy to have to make.

语法与词汇The council are going to merge our school in the big new county school.

语法与词汇While they were away on vocation, they allowed their mail to (be accumulated) at the post office.

语法与词汇Helen will leave (immediately).

语法与词汇He (selected) a birthday present for his daughter.

语法与词汇In a 1983 newspaper poll, Ann Landers, an advice columnist, was listed among the twenty-five most influential women in the United States.

语法与词汇She (purchased) a ticket and went up on the top deck.

语法与词汇Everybody was {{U}}glad{{/U}} to see Mary back

语法与词汇The land crab, a forest-floor scavenger native to tropical America, migrates to the water to (breed).

语法与词汇He dreamed of being a newspaperman, perhaps a foreign correspondent.

填空题Ready to Scream? Fear can be fun. Many young people queue up to ride very fast and scary (吓人的) roller coasters, screaming but enjoying themselves. Other people like to read "goose bumps" (鸡皮疙瘩) books or watch horror movies (恐怖电影) at night, scared to death but feeling excited. 1 Fear is an ancient way of surviving. Being scared makes animals (including humans) flee (逃走) from danger and save themselves. It is because of fear that we have lived through millions of years of evolution. 2 What happens in the brain when something frightens you? Nerves (神经) that begin at the eyes and ears lead to a part of the brain called the amygdala (扁桃体). When you suddenly see a snake, for example, the amygdala makes you freeze, perspire (流汗), have a quickened heartbeat, or run very fast. However, seeing the snake also uses another part of the brain, the cortex (皮层). It analyzes the situation, and if it finds that the snake is only made of rubber it tells your heart and the rest of your body to calm down. 3 Back to the first question: Why do some people like to make themselves scared? 4 Kalin said: "To believe we have control over a situation gives us a feeling of power." Scary movies or novels are good practice to prepare young people for the real thing. 5 And there might be some evolutionary advantage to being able to adjust this system that is there to protect people. A. Thrills (恐惧) such as roller coaster rides also go to the brain"s pleasure centre. B. Why do people like being scared? C. One reason is that we can play games with fear, and find ways to reduce the scariness by looking away or thinking of something else. D. Those who lacked a strong fear response (反应) were more likely to be killed, leaving the more timid and careful to pass their genes (基因) onto the next generation. E. Think of the amygdala as the engine and the cortex as the brake. F. Screaming saves ancient people"s life.

填空题Volunteers have to get prepared for the time in the calorimeter ______.

填空题The Weight Experiment Nicola Walters has been taking part in experiments in Scotland to discover why humans gain and lose weight. Being locked in a small room called a "calorimeter" (热量测量试) is one way to find out. 1. The signs above the two rooms read simply "Chamber One" and "Chamber Two". These are the calorimeters: 4m by 2m white-walled rooms where human volunteers are locked up in the name of science. Outside these rooms another sign reads "Please do not enter—work in progress" and in front of the rooms advanced machinery registers every move the volunteers make. Each day, meals measured to the last gram are passed through a hole in the wall of the calorimeter to the resident volunteer. 2. Nicola Walters is one of twenty volunteers who, over the past eight months, have spent varying periods inside the calorimeter. Tall and slim, Nicola does not have a weight problem, but thought the strict diet might help with her training and fitness programme. As a self-employed community dance worker, she was able to fit the experiment in around her work. She saw an advert for Volunteers at her local gym and as she is interested in the whole area of diet and exercise, she thought she would help out. 3. The experiment on Nicola involved her spending one day on a fixed diet at home and the next in the room. This sequence was repeated four times over six weeks. She arrived at the calorimeter at 8:30 am on each of the four mornings and from then on everything she ate or drank was carefully measured. Her every move was noted too, her daily exercise routine, timed to the last second. At regular intervals, after eating, she filled in forms about how hungry she felt and samples were taken for analysis. 4. The scientists help volunteers impose a kind of order on the long days they face in the room. "The first time, I only took one video and a book, but it was OK because I watched TV the rest of the time," says Nieola. And twice a day she used the exercise bike. She pedaled (踩踏板) for half an hour, watched by researchers to make sure she didn"t go too fast. 5. It seems that some foods encourage you to eat more, while others satisfy you quickly. Volunteers are already showing that high-fat diets are less likely to make you feel full. Believing that they may now know what encourages people to overeat, the researchers are about to start testing a high-protein weight-loss diet. Volunteers are required and Nicola has signed up for further sessions.